397459120

素因数分解:

$2^4\times 5^1\times {\mathrm{4968239}}^1$

素因数の和:4968252

約数の個数: 20

約数和(自身を含む): 924092640

約数和(自身を除く): 526633520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4968239, 9936478, 19872956, 24841195, 39745912, 49682390, 79491824, 99364780, 198729560, 397459120]

約数ペア:

[(1, 397459120), (2, 198729560), (4, 99364780), (5, 79491824), (8, 49682390), (10, 39745912), (16, 24841195), (20, 19872956), (40, 9936478), (80, 4968239)]